DE60041506D1 - PLANAR ANTENNA WITH SWITCHED STREAM DIVERSITY FOR INTERFERENCE REDUCTION IN A MOBILE NETWORK - Google Patents

PLANAR ANTENNA WITH SWITCHED STREAM DIVERSITY FOR INTERFERENCE REDUCTION IN A MOBILE NETWORK

Info

Publication number
DE60041506D1
DE60041506D1 DE60041506T DE60041506T DE60041506D1 DE 60041506 D1 DE60041506 D1 DE 60041506D1 DE 60041506 T DE60041506 T DE 60041506T DE 60041506 T DE60041506 T DE 60041506T DE 60041506 D1 DE60041506 D1 DE 60041506D1
Authority
DE
Germany
Prior art keywords
antenna
mobile network
planar antenna
interference reduction
switched stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE60041506T
Other languages
German (de)
Inventor
Daniel Sievenpiper
Hui-Pin Hsu
Greg Tangonan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HRL Laboratories LLC
Original Assignee
HRL Laboratories LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HRL Laboratories LLC filed Critical HRL Laboratories LLC
Application granted granted Critical
Publication of DE60041506D1 publication Critical patent/DE60041506D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/32Adaptation for use in or on road or rail vehicles
    • H01Q1/325Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H01Q13/085Slot-line radiating ends
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/006Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/006Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
    • H01Q15/008Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces said selective devices having Sievenpipers' mushroom elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/242Circumferential scanning

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Radio Transmission System (AREA)
  • Support Of Aerials (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

A directive antenna and method of directing a radio frequency wave received by and/or transmitted from the antenna. The antenna preferably includes a high impedance surface with a plurality of antenna elements disposed on said surface, a plurality of associated demodulators and power sensors and a switch. A Vivaldi Cloverleaf antenna is disclosed.
DE60041506T 2000-03-15 2000-12-22 PLANAR ANTENNA WITH SWITCHED STREAM DIVERSITY FOR INTERFERENCE REDUCTION IN A MOBILE NETWORK Expired - Fee Related DE60041506D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/525,831 US6366254B1 (en) 2000-03-15 2000-03-15 Planar antenna with switched beam diversity for interference reduction in a mobile environment
PCT/US2000/035030 WO2001069724A1 (en) 2000-03-15 2000-12-22 Planar antenna with switched beam diversity for interference reduction in a mobile environment

Publications (1)

Publication Number Publication Date
DE60041506D1 true DE60041506D1 (en) 2009-03-19

Family

ID=24094772

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60041506T Expired - Fee Related DE60041506D1 (en) 2000-03-15 2000-12-22 PLANAR ANTENNA WITH SWITCHED STREAM DIVERSITY FOR INTERFERENCE REDUCTION IN A MOBILE NETWORK

Country Status (7)

Country Link
US (1) US6366254B1 (en)
EP (2) EP1909358A1 (en)
JP (1) JP2003527018A (en)
AT (1) ATE422102T1 (en)
AU (1) AU2001225930A1 (en)
DE (1) DE60041506D1 (en)
WO (1) WO2001069724A1 (en)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6542746B1 (en) * 1998-10-09 2003-04-01 Nortel Networks Limited Frequency reuse scheme for point to multipoint radio communication
US6628242B1 (en) * 2000-08-23 2003-09-30 Innovative Technology Licensing, Llc High impedence structures for multifrequency antennas and waveguides
FR2817661A1 (en) * 2000-12-05 2002-06-07 Thomson Multimedia Sa DEVICE FOR RECEIVING AND / OR TRANSMITTING MULTI-BEAM SIGNALS
US7532170B1 (en) * 2001-01-25 2009-05-12 Raytheon Company Conformal end-fire arrays on high impedance ground plane
US6504507B2 (en) * 2001-02-09 2003-01-07 Nokia Mobile Phones Limited Antenna tuning
FR2825206A1 (en) * 2001-05-23 2002-11-29 Thomson Licensing Sa DEVICE FOR RECEIVING AND / OR TRANSMITTING ELECTROMAGNETIC WAVES WITH OMNIDIRECTIONAL RADIATION
US6441792B1 (en) * 2001-07-13 2002-08-27 Hrl Laboratories, Llc. Low-profile, multi-antenna module, and method of integration into a vehicle
US6433756B1 (en) * 2001-07-13 2002-08-13 Hrl Laboratories, Llc. Method of providing increased low-angle radiation sensitivity in an antenna and an antenna having increased low-angle radiation sensitivity
US7276990B2 (en) * 2002-05-15 2007-10-02 Hrl Laboratories, Llc Single-pole multi-throw switch having low parasitic reactance, and an antenna incorporating the same
US7298228B2 (en) * 2002-05-15 2007-11-20 Hrl Laboratories, Llc Single-pole multi-throw switch having low parasitic reactance, and an antenna incorporating the same
US6982676B2 (en) * 2003-04-18 2006-01-03 Hrl Laboratories, Llc Plano-convex rotman lenses, an ultra wideband array employing a hybrid long slot aperture and a quasi-optic beam former
US7193575B2 (en) * 2003-04-25 2007-03-20 Qualcomm Incorporated Wideband antenna with transmission line elbow
US7164387B2 (en) * 2003-05-12 2007-01-16 Hrl Laboratories, Llc Compact tunable antenna
US7245269B2 (en) * 2003-05-12 2007-07-17 Hrl Laboratories, Llc Adaptive beam forming antenna system using a tunable impedance surface
US7068234B2 (en) * 2003-05-12 2006-06-27 Hrl Laboratories, Llc Meta-element antenna and array
US7253699B2 (en) * 2003-05-12 2007-08-07 Hrl Laboratories, Llc RF MEMS switch with integrated impedance matching structure
US7002518B2 (en) * 2003-09-15 2006-02-21 Intel Corporation Low profile sector antenna configuration
US7145518B2 (en) * 2003-09-30 2006-12-05 Denso Corporation Multiple-frequency common antenna
US7397429B2 (en) * 2004-03-09 2008-07-08 Northrop Grumman Corporation Aircraft window plug antenna assembly
US7180009B2 (en) * 2004-07-30 2007-02-20 Bae Systems Information And Electronic Systems Inteegration Inc. Transmission line with stripped semi-rigid cable
US7186927B2 (en) 2004-07-30 2007-03-06 Bae Systems Information And Electronic Systems Integration Inc. High frequency via with stripped semi-rigid cable
US7193562B2 (en) 2004-11-22 2007-03-20 Ruckus Wireless, Inc. Circuit board having a peripheral antenna apparatus with selectable antenna elements
US7292198B2 (en) 2004-08-18 2007-11-06 Ruckus Wireless, Inc. System and method for an omnidirectional planar antenna apparatus with selectable elements
US7358912B1 (en) 2005-06-24 2008-04-15 Ruckus Wireless, Inc. Coverage antenna apparatus with selectable horizontal and vertical polarization elements
US7138952B2 (en) * 2005-01-11 2006-11-21 Raytheon Company Array antenna with dual polarization and method
US7893882B2 (en) 2007-01-08 2011-02-22 Ruckus Wireless, Inc. Pattern shaping of RF emission patterns
JP4075920B2 (en) * 2005-04-04 2008-04-16 松下電器産業株式会社 Receiver
TWI261386B (en) * 2005-10-25 2006-09-01 Tatung Co Partial reflective surface antenna
FR2894080B1 (en) * 2005-11-28 2009-10-30 Alcatel Sa NETWORK ANTENNA WITH IRREGULAR MESHING AND POSSIBLE COLD REDUNDANCY
US7423608B2 (en) 2005-12-20 2008-09-09 Motorola, Inc. High impedance electromagnetic surface and method
US20070159396A1 (en) * 2006-01-06 2007-07-12 Sievenpiper Daniel F Antenna structures having adjustable radiation characteristics
US7429961B2 (en) * 2006-01-06 2008-09-30 Gm Global Technology Operations, Inc. Method for fabricating antenna structures having adjustable radiation characteristics
US7372424B2 (en) 2006-02-13 2008-05-13 Itt Manufacturing Enterprises, Inc. High power, polarization-diverse cloverleaf phased array
JP2009535942A (en) * 2006-04-27 2009-10-01 レイスパン コーポレーション Antennas, devices, and systems based on metamaterial structures
CN101401258B (en) * 2006-05-25 2012-10-10 松下电器产业株式会社 Variable slot antenna and method for driving same
JP4131984B2 (en) 2006-05-25 2008-08-13 松下電器産業株式会社 Variable slot antenna and driving method thereof
US20070275664A1 (en) * 2006-05-26 2007-11-29 Signature Devices, Inc. Method and System for Improving Wireless Link Performance
CN101542838B (en) * 2006-08-25 2013-03-13 泰科电子服务有限责任公司 Antennas based on metamaterial structures
US20080160851A1 (en) * 2006-12-27 2008-07-03 Motorola, Inc. Textiles Having a High Impedance Surface
TW200843201A (en) * 2007-03-16 2008-11-01 Rayspan Corp Metamaterial antenna arrays with radiation pattern shaping and beam switching
US8212739B2 (en) 2007-05-15 2012-07-03 Hrl Laboratories, Llc Multiband tunable impedance surface
US8514146B2 (en) * 2007-10-11 2013-08-20 Tyco Electronics Services Gmbh Single-layer metallization and via-less metamaterial structures
KR101539441B1 (en) * 2007-11-13 2015-07-24 타이코 일렉트로닉스 서비시스 게엠베하 Metamaterial structures with multilayer metallization and via
JP5550100B2 (en) 2007-12-26 2014-07-16 日本電気株式会社 Electromagnetic bandgap element, antenna and filter using the same
US7868829B1 (en) 2008-03-21 2011-01-11 Hrl Laboratories, Llc Reflectarray
GB2461896B (en) * 2008-07-17 2013-04-24 Land Rover Uk Ltd Antenna assembly for a motor vehicle
US8547286B2 (en) * 2008-08-22 2013-10-01 Tyco Electronics Services Gmbh Metamaterial antennas for wideband operations
US8217843B2 (en) 2009-03-13 2012-07-10 Ruckus Wireless, Inc. Adjustment of radiation patterns utilizing a position sensor
US8681050B2 (en) 2010-04-02 2014-03-25 Tyco Electronics Services Gmbh Hollow cell CRLH antenna devices
US9190738B2 (en) * 2010-04-11 2015-11-17 Broadcom Corporation Projected artificial magnetic mirror
BR112013008959B1 (en) 2010-10-15 2022-01-25 Searete Llc ANTENNA AND METHOD FOR STANDARDIZING ELECTROMAGNETIC RADIATION BEAM
US9466887B2 (en) 2010-11-03 2016-10-11 Hrl Laboratories, Llc Low cost, 2D, electronically-steerable, artificial-impedance-surface antenna
US8994609B2 (en) 2011-09-23 2015-03-31 Hrl Laboratories, Llc Conformal surface wave feed
US8436785B1 (en) 2010-11-03 2013-05-07 Hrl Laboratories, Llc Electrically tunable surface impedance structure with suppressed backward wave
TWI404947B (en) * 2011-01-17 2013-08-11 Univ Nat Taiwan Science Tech Measurement apparatus
US8982011B1 (en) 2011-09-23 2015-03-17 Hrl Laboratories, Llc Conformal antennas for mitigation of structural blockage
CN103036009B (en) * 2011-09-30 2014-12-10 京信通信系统(中国)有限公司 Asymmetric dual polarized broadband radiation unit and array antenna
US9647341B2 (en) 2012-01-04 2017-05-09 Commscope Technologies Llc Antenna structure for distributed antenna system
US8756668B2 (en) 2012-02-09 2014-06-17 Ruckus Wireless, Inc. Dynamic PSK for hotspots
US9634403B2 (en) 2012-02-14 2017-04-25 Ruckus Wireless, Inc. Radio frequency emission pattern shaping
US10186750B2 (en) 2012-02-14 2019-01-22 Arris Enterprises Llc Radio frequency antenna array with spacing element
US9092610B2 (en) 2012-04-04 2015-07-28 Ruckus Wireless, Inc. Key assignment for a brand
US9819228B2 (en) * 2013-03-01 2017-11-14 Qualcomm Incorporated Active and adaptive field cancellation for wireless power systems
US9385435B2 (en) 2013-03-15 2016-07-05 The Invention Science Fund I, Llc Surface scattering antenna improvements
CN103367926B (en) * 2013-07-11 2015-04-08 东南大学 Multi-beam antenna design method based on holographic impedance surface
US9450311B2 (en) 2013-07-24 2016-09-20 Raytheon Company Polarization dependent electromagnetic bandgap antenna and related methods
US9923271B2 (en) 2013-10-21 2018-03-20 Elwha Llc Antenna system having at least two apertures facilitating reduction of interfering signals
US9647345B2 (en) 2013-10-21 2017-05-09 Elwha Llc Antenna system facilitating reduction of interfering signals
US9323877B2 (en) * 2013-11-12 2016-04-26 Raytheon Company Beam-steered wide bandwidth electromagnetic band gap antenna
US9935375B2 (en) 2013-12-10 2018-04-03 Elwha Llc Surface scattering reflector antenna
US10236574B2 (en) 2013-12-17 2019-03-19 Elwha Llc Holographic aperture antenna configured to define selectable, arbitrary complex electromagnetic fields
US9843103B2 (en) 2014-03-26 2017-12-12 Elwha Llc Methods and apparatus for controlling a surface scattering antenna array
US9448305B2 (en) 2014-03-26 2016-09-20 Elwha Llc Surface scattering antenna array
TWI536660B (en) 2014-04-23 2016-06-01 財團法人工業技術研究院 Communication device and method for designing multi-antenna system thereof
US9853361B2 (en) 2014-05-02 2017-12-26 The Invention Science Fund I Llc Surface scattering antennas with lumped elements
US10446903B2 (en) 2014-05-02 2019-10-15 The Invention Science Fund I, Llc Curved surface scattering antennas
US9711852B2 (en) 2014-06-20 2017-07-18 The Invention Science Fund I Llc Modulation patterns for surface scattering antennas
US9882288B2 (en) 2014-05-02 2018-01-30 The Invention Science Fund I Llc Slotted surface scattering antennas
KR102172187B1 (en) * 2014-08-22 2020-10-30 주식회사 케이엠더블유 Omni-directional antenna for mobile communication service
US10249953B2 (en) 2015-11-10 2019-04-02 Raytheon Company Directive fixed beam ramp EBG antenna
WO2017135890A1 (en) * 2016-02-05 2017-08-10 Agency For Science, Technology And Research Device and arrangement for controlling an electromagnetic wave, methods of forming and operating the same
KR101804683B1 (en) * 2016-06-20 2017-12-05 울산과학기술원 Wireless Power Transmission System and Communication System
US10389015B1 (en) * 2016-07-14 2019-08-20 Mano D. Judd Dual polarization antenna
US10333209B2 (en) 2016-07-19 2019-06-25 Toyota Motor Engineering & Manufacturing North America, Inc. Compact volume scan end-fire radar for vehicle applications
US10020590B2 (en) 2016-07-19 2018-07-10 Toyota Motor Engineering & Manufacturing North America, Inc. Grid bracket structure for mm-wave end-fire antenna array
JP6742666B2 (en) * 2016-08-17 2020-08-19 日本アンテナ株式会社 Planar antenna
US10141636B2 (en) 2016-09-28 2018-11-27 Toyota Motor Engineering & Manufacturing North America, Inc. Volumetric scan automotive radar with end-fire antenna on partially laminated multi-layer PCB
US9917355B1 (en) 2016-10-06 2018-03-13 Toyota Motor Engineering & Manufacturing North America, Inc. Wide field of view volumetric scan automotive radar with end-fire antenna
US10361481B2 (en) 2016-10-31 2019-07-23 The Invention Science Fund I, Llc Surface scattering antennas with frequency shifting for mutual coupling mitigation
US10401491B2 (en) 2016-11-15 2019-09-03 Toyota Motor Engineering & Manufacturing North America, Inc. Compact multi range automotive radar assembly with end-fire antennas on both sides of a printed circuit board
WO2018143627A1 (en) * 2017-01-31 2018-08-09 Samsung Electronics Co., Ltd. High-frequency signal transmission/reception device
US10585187B2 (en) 2017-02-24 2020-03-10 Toyota Motor Engineering & Manufacturing North America, Inc. Automotive radar with end-fire antenna fed by an optically generated signal transmitted through a fiber splitter to enhance a field of view
JP6498241B2 (en) * 2017-07-12 2019-04-10 ソフトバンク株式会社 Wireless communication apparatus and moving body
CN115349197A (en) * 2020-05-09 2022-11-15 华为技术有限公司 Antenna for a wireless communication device and such a device
CN112039607B (en) * 2020-08-24 2023-04-18 深圳市亿联无限科技有限公司 WiFi product performance testing equipment and method
CN113690593B (en) * 2021-08-27 2022-04-01 北京星英联微波科技有限责任公司 High-gain low-profile circularly polarized antenna

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209791A (en) * 1978-10-05 1980-06-24 Anaren Microwave, Incorporated Antenna apparatus for bearing angle determination
US4370659A (en) 1981-07-20 1983-01-25 Sperry Corporation Antenna
CA1278898C (en) * 1985-10-28 1991-01-08 Haruo Tanaka Process for producing resin for paper coating
US4782346A (en) * 1986-03-11 1988-11-01 General Electric Company Finline antennas
US4905014A (en) 1988-04-05 1990-02-27 Malibu Research Associates, Inc. Microwave phasing structures for electromagnetically emulating reflective surfaces and focusing elements of selected geometry
US5070340A (en) 1989-07-06 1991-12-03 Ball Corporation Broadband microstrip-fed antenna
CA2049597A1 (en) 1990-09-28 1992-03-29 Clifton Quan Dielectric flare notch radiator with separate transmit and receive ports
US5519408A (en) 1991-01-22 1996-05-21 Us Air Force Tapered notch antenna using coplanar waveguide
US5220330A (en) * 1991-11-04 1993-06-15 Hughes Aircraft Company Broadband conformal inclined slotline antenna array
FR2709833B1 (en) * 1993-09-07 1995-10-20 Alcatel Espace Broadband and low band listening instrument for space applications.
US5541614A (en) 1995-04-04 1996-07-30 Hughes Aircraft Company Smart antenna system using microelectromechanically tunable dipole antennas and photonic bandgap materials
US5557291A (en) * 1995-05-25 1996-09-17 Hughes Aircraft Company Multiband, phased-array antenna with interleaved tapered-element and waveguide radiators
US6008770A (en) 1996-06-24 1999-12-28 Ricoh Company, Ltd. Planar antenna and antenna array
US5905465A (en) 1997-04-23 1999-05-18 Ball Aerospace & Technologies Corp. Antenna system
US6021317A (en) * 1997-04-30 2000-02-01 Ericsson Inc. Dual antenna radiotelephone systems including an antenna-management matrix switch and associated methods of operation
US5894288A (en) * 1997-08-08 1999-04-13 Raytheon Company Wideband end-fire array
US5874915A (en) * 1997-08-08 1999-02-23 Raytheon Company Wideband cylindrical UHF array
GB2328748B (en) * 1997-08-30 2002-02-20 Ford Motor Co Improvements in sensor assemblies for automotive collision warning systems
US5945951A (en) * 1997-09-03 1999-08-31 Andrew Corporation High isolation dual polarized antenna system with microstrip-fed aperture coupled patches
US5923303A (en) 1997-12-24 1999-07-13 U S West, Inc. Combined space and polarization diversity antennas
US6262495B1 (en) 1998-03-30 2001-07-17 The Regents Of The University Of California Circuit and method for eliminating surface currents on metals
US6097343A (en) * 1998-10-23 2000-08-01 Trw Inc. Conformal load-bearing antenna system that excites aircraft structure
FR2785476A1 (en) * 1998-11-04 2000-05-05 Thomson Multimedia Sa Multiple beam wireless reception system has circular multiple beam printed circuit with beam switching mechanism, mounted on camera
US6441792B1 (en) * 2001-07-13 2002-08-27 Hrl Laboratories, Llc. Low-profile, multi-antenna module, and method of integration into a vehicle

Also Published As

Publication number Publication date
EP1909358A1 (en) 2008-04-09
ATE422102T1 (en) 2009-02-15
AU2001225930A1 (en) 2001-09-24
EP1287588B1 (en) 2009-01-28
EP1287588A1 (en) 2003-03-05
US6366254B1 (en) 2002-04-02
JP2003527018A (en) 2003-09-09
WO2001069724A1 (en) 2001-09-20

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